Schematic Diagram - Main Board (3/3) - Sony D-NE330 Service Manual

4-3. SCHEMATIC DIAGRAM – MAIN Board (3/3) –
R112 R113 R114
470 220 4.7k
PWMR
C110 C113
C111
2200p R213 220p
4700p
220
PWML
R212 R214
470 4.7k
C210 C211 C213
2200p 4700p 220p
D-NE330/NE331
• See page 16 for Waveforms. • See page 16 for IC Block Diagrams.
(3/3)
R108 C107
10 1000p
C207 R208
1000p 10
HEADPHONE AMP
IC301
BH35544F-FE2
R104
10k
C305
OUT1 VCC
C105 1
4.7 R105 OUT2
XMUTE
6.3V 33k
BIAS
IN1
R205 IN2
GND
C205 33k
4.7 C106 R106 R206
6.3V 470p 10k 10k
R204
10k
C206
470p
L302 D301
MA2Z748001S0
22µH
DC/DC CONVERTER
IC302
XC6367A281MR
GND CE
VDD
C307 EXT VOUT
47
4V S
Q301
XP151A13A0MR
DC/DC CONVERTER
R111 R211
2.2 2.2
C108
220 R109 C109 C209
4V 1k 0.22 0.22
R110 0 FB101
R210 0 FB201
FB301
(NE330:US)
C208 C309
R209
220
0.033
1k
4V
C303
22
6.3V
C304
0.1
C302
0.1
C301
100 6.3V
R302 680k
R307 220k
AMUTE
R308
Q302 1M
CPH3303-TL
Q303
C308 DTC115TUA
C306
1 -T106
47
6.3V
Q302,303
B+ SWITCH
11 11
J301
B5
B6
B7
(Page 9)
B3
B2
(Page 9)
C1
C2
C4
C3
(Page 10)
D-NE330/NE331